Unit Economics
Key Metrics
Section titled “Key Metrics”| Metric | Target |
|---|---|
| Marginal cost per customer | $3-8/mo (email delivery + infra) |
| Gross margin | 85%+ |
| CAC payback | Under 3 months (PLG: free to paid) |
| Annual churn | Under 5% (contact graph + sequences = high switching cost) |
| ARPU | $49–149/mo |
| LTV (3yr) | $1,764–5,364 (at under 5% annual churn) |
| LTV:CAC ratio | Above 5:1 target |
Revenue Milestones
Section titled “Revenue Milestones”| Phase | Timeline | Customers | MRR Target |
|---|---|---|---|
| Phase 1 | Months 1-4 | 30+ | Validation |
| Phase 2 | Months 5-9 | 100+ | $20K-50K |
| Phase 3 | Months 10-15 | 200+ | $80K-200K |
| Phase 4 | Months 16-20 | 300+ | $200K+ |
Why Margins Are High
Section titled “Why Margins Are High”GrowthOS is a pure SaaS platform with minimal marginal cost per customer:
- Multi-tenant shared infrastructure — compute, storage, and event processing are shared across all tenants. Adding one more customer costs near-zero until you hit a scaling threshold.
- Email delivery via SES — Amazon SES costs $0.10 per 1,000 emails. A Growth-tier customer sending 10K emails/mo costs $1 in delivery.
- No per-seat licensing — GrowthOS charges by contacts, not seats. Infrastructure cost scales with data volume, not team size.
- No physical goods or services — no fulfillment, no professional services, no hardware.
The result: 85%+ gross margins at scale, with marginal cost per customer between $3-8/mo depending on email volume and event throughput.
Why Churn Is Low
Section titled “Why Churn Is Low”The unified contact graph creates organic switching cost — not through vendor lock-in, but through accumulated integrated value:
- Enriched contact records — every module enriches the same contact profile. A single record might include waitlist position, referral history, email engagement, NPS score, and survey responses.
- Cross-module event history — a contact’s full journey (signed up via referral, completed onboarding sequence, submitted NPS 9, referred 3 others) lives in one graph.
- Migration pain — moving 50K+ enriched records with cross-module event history to a collection of point solutions means rebuilding identity resolution, re-wiring integrations, and losing compound context.
The deeper a team uses GrowthOS, the more painful it becomes to leave — not because of artificial barriers, but because the integrated data is genuinely more valuable than the sum of its parts.
Growth Flywheel
Section titled “Growth Flywheel”-
Free tier drives adoption
Indie builders and small teams start with 500 contacts, a waitlist, and SDK access. Zero risk, zero commitment.
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Module expansion within tenant
As teams grow, they activate referrals, lifecycle emails, surveys, and advocacy. Each module adds data to the contact graph and increases the platform’s value.
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Organic switching cost accumulates
The unified contact graph — with enriched profiles, cross-module events, and behavioral history — becomes the team’s growth operating system. Replacing it means fragmenting identity across 5+ tools.
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Low churn drives high LTV
At under 5% annual churn and $49–149/mo ARPU, 3-year LTV reaches $1,764–5,364 per customer. With CAC payback under 3 months, the unit economics compound rapidly.